A flat add nine piano chord (Abadd9)
Also written G#add9 (G sharp add nine)
An add9 chord adds the ninth (the second, an octave up) to a major chord, without the seventh. It enriches the sound while staying bright: popular in pop and folk.
On the keyboard
Root position
- Notes
- A♭ – C – E♭ – B♭
- Fingering (right hand)
- 1 – 2 – 3 – 5
Chord notes
| Note | Interval |
|---|---|
| A♭ (A flat) | root |
| C | major third |
| E♭ (E flat) | perfect fifth |
| B♭ (B flat) | major ninth |
Formula: 1 – 3 – 5 – 9 · A♭ – C – E♭ – B♭
A progression with this chord
The chord replaces the first degree of a pop progression to enrich it.